document.write( "Question 866875: Tom needs 7 pounds of metal with 32% silver. If Tom combines one metal with 25% silver and another with 78% silver, how much of each metal does Tom need?
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Algebra.Com's Answer #522569 by josgarithmetic(39620)\"\" \"About 
You can put this solution on YOUR website!
This idea is explained here:\r
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\n" ); document.write( "\n" ); document.write( "Mixing two concentrations for known amount of mixture\r
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